Retractor blade for heart valve surgery



FIG. 1 is a front isometric view of a retractor blade for heart valve surgery according to the invention showing our new design with the blades in an open position.

FIG. 2 is a front elevational view thereof.

FIG. 3 is a right elevational view thereof.

FIG. 4 is a rear elevational view thereof.

FIG. 5 is a top plan view thereof.

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a front isometric view thereof with the blades closed position.

The broken line showing in FIGS. 1 through 7 is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a retractor blade for heart valve surgery, substantially as shown and described. 